"The first point is that although the evil god is powerful, he is not omnipotent. If the pen ~ fun ~ pavilion www.biquge.info calculated from its energy fluctuations, it may need to save up enough energy for three months before it can use the moon as a lever to clear us of brain domain knowledge on the night of the full moon.

So, as long as every three months, we can resist this wave of attacks.

The second point is that the reason why it needs to accumulate enough energy for three months is not to target us, but to break down the monument in the village to protect us.

Just like those savages, without the protection of the monument, it will not be long before they forget everything and rely only on the instinct of creatures to survive.

The third and most important point is that once the village is upgraded to a third-level tribe, then our village not only has no limit on the number of people. And I think that the protection of the monument for us will definitely be greatly increased, and I am afraid that at that time, the evil gods will not be able to erase our memories at will. ”

After listening to Gu Mu's analysis, everyone couldn't help but shudder. They could never have imagined that above them, there was such a powerful being who radiated infinite malice towards humans.

Fortunately, there is an ancestral god, and with the help of the tablet, he blesses mankind. Otherwise, everyone shuddered when they thought of the wild men who only had the survival instinct left, like wild beasts.

Only Wang Hu looked confused, as if listening to a book from heaven.

In fact, Wang Hu is not very stupid, but since the exchange day, he has found that there is no place in the village that needs him to think about it, as long as he follows Wang Hao and listens to Wang Hao's words unswervingly, there is absolutely nothing wrong.

As the saying goes, the brain will rust if it is not used. Wang Hu is like this, he is boiling his muscles all day long, but his head is getting less and less.

Gu Mu's words, if they spread in a large area, might cause panic, so Wang Hao issued a gag order, and everyone present was not allowed to spread the matter.

According to Gu Mu, the use of energy in the brain domain consumes a lot of money, and he fought a big battle with the evil god in the brain domain last night, and he needs to recuperate for a long time to recover.

Therefore, during this time, he had no way to take care of the affairs in the village.

Helplessly, the trip to the Black Forest to find asphalt was postponed again by Wang Hao.

However, it just so happened that the construction of the copper smelting furnace had recently reached a critical time.

In the eyes of people from other villages, brick burning should be the most precious technology in Wangcun. What an amazing skill it is to be able to turn the ubiquitous and useless dirt into a stone that can be used to build a house and build a canal.

It's just that for this magical ability, Wang Cun doesn't seem to know its preciousness.

Any person from another village can find an excuse to visit the brick kiln when he is not busy.

The defense on the side of the brick kiln is even more sparse than the defense on the side of the textile house, and it can even be said that there are no defenders at all.

In comparison, the copper smelting furnace on the other side of the village, which was completely useless in the eyes of the people of the Great Wilderness, could be called heavily defended.

If the brick kiln burns the clay into stone, then the copper smelting furnace belongs to the stone to burn the stone into the soil.

The Great Wilderness lacks everything, but no mud. After these outsiders heard the secret of the copper furnace, they couldn't figure out why Wang Cun had to spend so much effort to build such a useless thing.

The whole copper furnace resembles an upright oval shell. It's just that a quarter of the top of the husk fruit has been flattened by a brush.

The copper furnace is large, with a diameter of more than four meters. But if you know that the walls of its furnace are a meter thick, you will know that the inside of it is not very large.

The copper furnace with a large abdomen and two slightly pointed ends is like a watermelon on the earth, and the entire copper furnace is divided into three layers.

The outermost layer is about a foot thick of earth, mainly for insulation.

The middle layer is a layer of bricks made of clay and lime, and such a thick layer of bricks, even a rhinoceros, cannot collapse it, mainly for the sake of strength.

The innermost layer is almost a foot thick of clay. The rammed clay is not only extremely hard, but the most important thing is that it has a melting point of 1,700 degrees.

The melting point of copper is 1,083 degrees, and the temperature of an open flame in nature is only 700 to 900 degrees, but in a sealed copper furnace, if you use a charcoal fire, and then blow it with a blower, the temperature can even reach 1,200 degrees.

At such temperatures, it is possible to liquefy not only copper ore, but also ordinary soil. Only a thick layer of clay can block this high temperature.

In fact, the thickness of the copper smelting furnace, as long as it is a foot thick, can block the high temperature, but Wang Hao is born with a sense of fear of this kind of sealed high-temperature object. Just as he was a child, he was always worried that the pressure cooker in his house would explode, so he tripled the thickness of the copper furnace.

The four sides of the copper furnace left four round holes respectively.

Outside the round hole, four newly fired clay pipes extend diagonally downward.

And at the end of the half-meter-long clay pipe, a wooden bellows is connected with animal skins.

The whole bellows are about one meter long and are boxy wooden bellows similar to a pump.

There is a T-shaped handle at the end of the bellows, which pulls it out and the air enters the bellows through the reserved holes.

And once it's pressed down, that air is squeezed into the front.

This kind of ancient bellows, although it is more laborious to use, but for the people of the Great Wilderness, the last thing they lack is a handful of strength.

Enough charcoal is put into the bottom of the copper furnace, and the temperature in the furnace can exceed 1,200 degrees under the action of the blower.

The crushed copper ore accumulated on top of the charcoal will turn into copper water at such a high temperature, and then sink to the bottom of the furnace.

Normally, the melting point of the slag left over from copper smelting is higher than that of copper. But fortunately, Wang Hao knows that lime can be used as an accelerant for slag.

Copper is very dense, and neither the slag from the melting of copper ore nor the ash left behind by charcoal burning is as heavy as it.

Therefore, the molten copper always sinks to the bottom of the copper furnace.

The rest of the slag will float on top of the molten copper. Just like water and oil are put together, they can be divided into two distinct layers after precipitation.

Directly below the copper furnace, there is a copper outlet reserved. The copper outlet can be controlled by the valve.

In order to facilitate the tribesmen to use clay pots to connect copper, a one-meter cubic pit was dug under the copper outlet.

When the copper furnace was built, Wang Hao calculated the manpower needed for copper smelting.

From top to bottom, a person is required to fill the copper furnace from the charging port reserved at the top and take care of the exhaust hole.

Two to four control blowers are required.

A valve that controls the copper outlet is required.

A person who uses a clay pot to connect the copper water and a person who handles the slag is also required.

In this way, it would take six to eight people to refine a furnace of copper alone.

Among them, the only ones that can replace the wild man are the one who blows the wind and the one who adds the material.

And the labor that extends from copper smelting.

Wang Cun doesn't need to worry about transporting copper ore for the time being, Liu Cun wants to eat his stomach, so he will naturally send the copper ore on time every month.

But the charcoal burning needs to be done by the people of Wang Cun themselves. And if you want to burn charcoal, you need a lot of firewood, which in turn requires manpower.

Of course, if the giant is allowed to cut wood, it can indeed be used by ten people, but the giant has more important things to do at the moment, and that is to crush the copper ore.

It is impossible to melt the entire copper mine with the current soil methods of Wang Village. Therefore, the copper mine must grind it into powder.

A two-meter soil pit was dug out, and under the soil pit, the strongest bluestone slab in the wilderness was cushioned. And the pit was built with bricks.

A pile of copper ore is pushed into the earth, and at this time, the giant can use his hammer to strike in the pit.

The copper mine, which was not very strong, was smashed by the giants in this way.

And those splashes of rubble, after hitting the wall of the pit made of masonry, will still fall into the pit.

It's not difficult to smelt copper. If you want to learn, any tribe can learn it.

However, its impact on the future famine is incomparably huge.

Not to mention anything else, if a metal arrow is added to the shaft of the arrow, more than ten strong bows have the ability to shoot second-level creatures.

If the iron nails with simple production process and can be mass-produced come out, then before the brick house can be built, you can lead people to build some breathable, bright and moisture-proof wooden houses. In this way, it will not be every day that the dried fish will rot due to moisture due to storage in the hut. The carpenter's skill has not yet been learned, and it is impossible to build a wooden house that can be fitted tightly without a single nail in its entirety.

The shovels produced by the system will no longer be a sought-after commodity in the village, and the sowing season is approaching, and there are more than a dozen kinds of plants that have been systematically identified as edible and can be used as dishes can now be planted, but because of the lack of reclaimed land, Wang Hao had to postpone their planting plans and leave those few plots of land for wheat.

Therefore, because of these various reasons, the matter of copper smelting must be controlled by his own people throughout the whole process. Although the savages who didn't understand anything, couldn't speak, and could only rely on some simple orders and imitations to do their work, Wang Hao calculated and found that practicing a furnace of copper also required at least five of his own clansmen to participate in the core part. And that's not counting the soldiers on guard around it.

To refine a furnace of copper, in addition to more than a dozen savages who can do coolies, they also need five clansmen who can rest assured.

And for such a furnace, Wang Hao needs to build at least three.

Of course, not all three furnaces are copper furnaces.

You know, copper is not hard, and the hardness of copper trained by this method is not even as hard as that of stone. (To be continued.) )